DOC: Add missing period to parameter description

pandas/_testing.py

@@ -1014,7 +1014,7 @@ def assert_extension_array_equal(
     Parameters
     ----------
     left, right : ExtensionArray
-        The two arrays to compare
+        The two arrays to compare.
     check_dtype : bool, default True
         Whether to check if the ExtensionArray dtypes are identical.
     check_less_precise : bool or int, default False

pandas/core/groupby/groupby.py

@@ -2329,7 +2329,7 @@ def shift(self, periods=1, freq=None, axis=0, fill_value=None):
         periods : int, default 1
             Number of periods to shift.
         freq : str, optional
-            Frequency string
+            Frequency string.
         axis : axis to shift, default 0
         fill_value : optional
 

pandas/core/indexers.py

@@ -296,7 +296,7 @@ def check_array_indexer(array: AnyArrayLike, indexer: Any) -> Any:
     indexer : array-like or list-like
         The array-like that's used to index. List-like input that is not yet
         a numpy array or an ExtensionArray is converted to one. Other input
-        types are passed through as is
+        types are passed through as is.
 
     Returns
     -------

pandas/core/indexes/period.py

@@ -85,7 +85,7 @@ class PeriodIndex(DatetimeIndexOpsMixin, Int64Index):
     copy : bool
         Make a copy of input ndarray.
     freq : str or period object, optional
-        One of pandas period strings or corresponding objects
+        One of pandas period strings or corresponding objects.
     year : int, array, or Series, default None
     month : int, array, or Series, default None
     quarter : int, array, or Series, default None

pandas/io/formats/style.py

@@ -452,7 +452,7 @@ def format(self, formatter, subset=None, na_rep: Optional[str] = None) -> "Style
             ``formatter`` is applied to.
         na_rep : str, optional
             Representation for missing values.
-            If ``na_rep`` is None, no special formatting is applied
+            If ``na_rep`` is None, no special formatting is applied.
 
             .. versionadded:: 1.0.0
 

pandas/io/sql.py

@@ -356,12 +356,12 @@ def read_sql(
     sql : str or SQLAlchemy Selectable (select or text object)
         SQL query to be executed or a table name.
     con : SQLAlchemy connectable (engine/connection) or database str URI
-        or DBAPI2 connection (fallback mode)'
+        or DBAPI2 connection (fallback mode)'.
 
         Using SQLAlchemy makes it possible to use any DB supported by that
         library. If a DBAPI2 object, only sqlite3 is supported. The user is responsible
         for engine disposal and connection closure for the SQLAlchemy connectable. See
-        `here <https://docs.sqlalchemy.org/en/13/core/connections.html>`_
+        `here <https://docs.sqlalchemy.org/en/13/core/connections.html>`_.
     index_col : str or list of str, optional, default: None
         Column(s) to set as index(MultiIndex).
     coerce_float : bool, default True